HD404818 Datasheet, PDF (84/100 Pages) Hitachi Semiconductor – 16-digit LCD driver

HD404818 Series
Input/Output Characteristics for High-Current Pins (HD404812, HD404814, HD404816, HD404818:
V_CC = 4 to 6 V; HD4074818: V_CC = 4 to 5.5 V; GND = 0V, T_a = –20°C to +75°C, unless otherwise
specified)
Item
Symbol
Input high V_IH
voltage
Input low
V_IL
voltage
Output high V_OH
voltage
Pull-up MOS –I_PU
current
Output low V_OL
voltage
Pin
D₀–D₉
D₀–D₉
D₀–D₉
D₀–D₉
D₀–D₉
Min
Typ
0.7V_CC
–0.3
V_CC – 1.0
30
100
Input/output |I_IL|
leakage
current*
D₀–D₉
Note: * Output buffer current is excluded.
Max
V_CC + 0.3
0.3V_CC
180
2.0
0.4
1
Unit
V
V
V
µA
V
V
µA
Test Condition
–I_OH = 1.0 mA
V_CC = 5 V,
V_in = 0 V
I_OL = 15 mA,
V_CC = 4.5 to 6 V
I_OL = 1.6 mA
V_in = 0 V to V_CC
Liquid Crystal Circuit Characteristics (HD404812, HD404814, HD404816, HD404818: V_CC = 4 to 6
V; HD4074818: V_CC = 4 to 5.5 V; GND = 0 V, T_a = –20°C to +75°C, unless otherwise specified)
Item
Symbol Pin
Min
Typ Max Unit Test Condition Note
Segment
V_DS
driver voltage
drop
SEG1 to SEG32
0.6
V
I_d = 3 µA
1
Common
V_DC
driver voltage
drop
COM1 to COM4
0.3
V
I_d = 3 µA
1
LCD power R_W
supply
dividing
resistance
100
300 900 kΩ
LCD voltage V_LCD
V₁
4
V_CC
V
2
Notes: 1. Voltage drops from pins V₁, V₂, V₃, and GND to each segment and common pin.
2. Keep the relationship V_CC ≥ V₁ ≥ V₂ ≥ V₃ ≥ GND when V_LCD is supplied by an external power
supply.
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